Abstract: The shot coke formation in delayed coking unit in Petrochina Liaoyang petrochemical company is introduced when processed the mixture of Russian and Venezuela vacuum Residue. The production of shot coke has been avoided by optimizing operating parameters and adjusting mixing ratio of feedstock. Production practice has proved that changing operating conditions has no obvious effect on generation of shot coke. Improvement on properties and composition of feedstock is close related with formation of shot coke.

Key words: Delayed coking, Mixturer of Residue, Shot coke, Process conditions, The nature of materials

摘要： 辽阳石化延迟焦化装置在加工俄罗斯/委内瑞拉混合渣油时生成了弹丸焦,实验经过不断的优化工
艺操作和调整俄罗斯/委内瑞拉渣油混合比例,最终抑制了弹丸焦的生成。生产实践结果证明:操作条件变化对避
免和减少弹丸焦生成效果不明显,原料性质和组成变化才是生成弹丸焦的主要因素。

关键词: 延迟焦化, 混合渣油 , 弹丸焦 , 工艺条件 , 原料性质